California Turns Toward the Sea for Drought Relief
The effects of California's drought are far-reaching on agriculture and urban areas alike. "With its local reservoirs at less than 30% of capacity, the City Council voted in September to pursue reopening the facility, which can turn sea water into the equal of nearly three-fourths of Santa Barbara’s normal demand for drinkable water," writes Jim Carlton.
"The City constructed the reverse osmosis seawater desalination facility as an emergency water supply in response to the severe drought from 1986 to 1991," according to the city's website. "Due to sufficient freshwater supplies since 1991, the facility remains in long-term standby mode for reactivation within two years."
Desalination technology does not come without critics, as one might expect, who "contend the costs are excessive given how little water the plants produce," writes Carlton. "It would take putting a plant every 2 to 3 miles in Southern California to equal what we get from the mountains,” said Conner Everts, co-chairman of the Desal Response Group, a nonprofit in Santa Monica, Calif.
“We think it’s the stupidest, most environmentally harmful water alternative possible,” said Kira Redmond, executive director of Channelkeeper, an environmental group in Santa Barbara.
According to their fact sheet [PDF], "Many desalination plants (including Santa Barbara’s) use screened intake pipes to draw seawater into the facility. Fish and other marine life are injured or killed when they become trapped or 'impinged' on the intake screens by the suction power of the intake."
Criticism notwithstanding, "(a)s of 2013, there were 26 desalination plants in California—up from 18 in 2006, according to the most recent data," writes Carlton. "Some are operated by government authorities while others are privately run."
Poseidon Water, a Boston company that develops water systems, is using $1 billion in private financing to construct a desalination plant in Carlsbad, Calif. It aims to provide the San Diego County Water Authority with about 8% of its water, at a cost up to twice that of water the agency imports from northern California.
Carlton describes facilities being planned or operating in Cambria, the Monterey Peninsula, and Huntington Beach. According to The Cambrian, "Sand City in Monterey County, Avalon on Catalina Island and Orange County are the only other communities in the state that regularly use desalinated water."
As noted in a post last April on Texas infrastructure, the "San Antonio Water System board took action (March 4) to begin what could become the nation's largest inland desalination plant," funded in part with a $109 million loan from the state, according to San Antonio Express-News. [They do everything bigger in Texas?].